He said I might be checking in him meaning spying using technology an he is not even my bf. A psycho?

It was a long distance thing and I never said yes because I want to take time and had some of my own insecurities. We had a fight an we said we no more need each other because it was for the best. He texted after few weeks and I called him. During that conversation he said who knows you might be spying on me using a technology. This sparks a big question to me. My principle is people who are suspicious often do what they are accusing others do. I never checked on him and I trust whatever he told me. Well he is not all that.